Question

the cost of fencing a rectangular field at rupees 18 per metre is rupees 1980 if the width of the field is 23 metre find its length ​

Answer 1

Answer:

lenght=?

width=23m

total cost =1980

total cost = area * cost

1980= 23*l*18

110=23l

l=110/23

l=4.3m

Answer 2

Given that : cost of fencing a rectangular field = 18Rs. per metre

Total cost of fencing =₹1980 and width = 23 m

Total fenced = 1980/18 = 110m

As we know that :

perimeter of rectangle = 2(length + breadth)

=> 110 = 2( length + 23)

=> 110/2. = length + 23

=> 55m = length +23

=> 55-23. = length

=> 32 m = length

So, the Length of the field will be 32 m.

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